8000 Series P100 assembled reusable half mask respirator & Particulate filter disks. Includes 8000 Series facepiece, 8940 P100 Particulate Filter Disks and 8900 Filter Disk Holders. Fiberglas-free filters. No plastic casing to throw away. Efficiency level of 99.97% or greater against both oil and non-oil based particulate aerosols. Meets heat and flame resistance in accordance with ANSI/ISEA 110-2003 Section 7.11.1. 100% PVC-Free. Soft, durable facepiece and light weight design plus extra-wide sealing area provides all-day comfort. 100% PVC-Free. Exhalation valve positioned for better communication. Living hinge allows head harness to be folded comfortable around neck when not in use. Low profile, compact design fits well under welding helmets and with safety glasses. Maintenance made simple with very few replacement parts. 8000 Series P100 Assembled Reusable Half Mask Respirator & Particulate Filter Disks.